Results 71 to 80 of about 81,851 (245)

Considerations for High-Fidelity Modeling of Unsteady Flows in a Multistage Axial Compressor

open access: yesInternational Journal of Turbomachinery, Propulsion and Power
This paper presents the development and validation of a high-fidelity, unsteady, computational fluid dynamics (CFD) model of the Purdue 3-Stage Axial Research Compressor. A grid convergence study assesses the spatial discretization accuracy of the single-
Douglas R. Matthews, Nicole L. Key
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

R410A Scroll Compressor Design Verification used with Finite Element Analysis [PDF]

open access: yes, 2012
One ITRI developed R410A scroll type compressor was analyzed in this study by using finite element analysis (FEA). Through ITRI developed scroll type compressor computer software (ITRI_STC), the needed boundary conditions, such as pressure in chambers ...
Tang, Yueh-ju   +2 more
core   +1 more source

Development of R744 Two Stage Compressor for Commercial Heat Pump Water Heater [PDF]

open access: yes, 2012
A novel CO2 two stage compressor has been developed. The developed compressor equips one rotary and one scroll compression chambers as first and second stage respectively.
Mizuno, Hisao   +4 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Influência do óleo lubrificante na transferência de calor em um compressor hermético alternativo [PDF]

open access: yes, 2007
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.No interior de um compressor hermético, o óleo lubrificante tem por função lubrificar as partes móveis, reduzir o ...
Pizarro R., Rodrigo A.
core  

Calculated Optimal Mechanical Efficiency of a Large Capacity Reciprocating Compressor [PDF]

open access: yes, 2012
In this study, calculations of the mechanical efficiency of a large reciprocating compressor, developed by Mayekawa MFG. Co., Ltd., with a per cylinder suction volume of 1300 cm3 were carried out.
Anami, Keiko   +4 more
core   +1 more source

Selecting a method for reducing friction in rotary refrigeration compressors developed for import substitution [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The article discusses one of the methods for reducing friction, used for newly developed rotary compressors as part of import substitution work. The experience of using rotary refrigeration compressors is analyzed and the main factors determining ...
N. A. Kudla, A. V. Burakov
doaj   +1 more source

Variable Guide Vane Scheduling Method Based on the Kinematic Model and Dual Schedule Curves

open access: yesApplied Sciences, 2020
The variable guide vanes (VGV) of gas turbine engines are commonly utilized to expand operating range and to improve efficiency of the compressor.
Sun Je Kim, Taeseok Ki
doaj   +1 more source

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